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Heavy duty asphalt; The Hamburg Way

Heavy duty asphalt; The Hamburg Way . Bergisch Gladbach June 18 2012. German Standard 2012. Binder Course AC 22 BS and AC 16 BS Bitumen 25/55-55 or 30/45 or 10/40-65 Wheel tracking not specified but must be documented Voids Vmin 3.5 % - Vmax 6.5

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Heavy duty asphalt; The Hamburg Way

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  1. Heavy duty asphalt; The Hamburg Way Bergisch Gladbach June 18 2012

  2. German Standard 2012 • Binder Course AC 22 BS and AC 16 BS • Bitumen 25/55-55 or 30/45 or 10/40-65 • Wheel tracking not specified but must be documented • Voids Vmin 3.5 % - Vmax 6.5 • Binder content Bmin 4.2 M.-% (AC 22 B S) and 4.4 M.-% (AC 16 B S) • Grading according to TL Asphalt-StB 07

  3. German Standard 2012 • Wearing CourseSMA 8 S and SMA 11 S • Bitumen 25/55-55 or 50/70 • Wheel tracking not specified but must be documented • Voids Vmin 2.5 – Vmax 3.0 • Binder content Bmin 6.6 M.-% (SMA 11 S) and 7.2 M.-%(SMA 8 S) • Fiber or other substances 0.3 -1.5 M.-% • Grading according to TL Asphalt-StB 07

  4. German Standard 2012 • Does it work? • Yes; this is a well proven design that stood the test of time. • Problems? • If any; workmanship, workmanship; work….. • Fit for future? • SMA with even 25/55-55 deforms under highest traffic on inclines and on truck parking areas, also on bus terminals. SMA with 10/40-65 successfully used as remedy

  5. Client requirementfordimensioning 200 Van-Carrier - Axles125 kN/day 365 days/ year life20 Years Resultby APSDS &BISAR 30 cm Schottertragschicht 0/45 8 cm Binder 0/16 6 cm SMA 0/16 Withuseofspecialbitumen

  6. HOCHSTANDFESTE FLÄCHEN MIT ASPHALT TATSÄCHLICH ABER: 2600 Container- bzw. 1000 LKW-Bewegungen pro Tag

  7. Construction in layers 1997 2002 2005 6 cm 6 cm 6 cm SMA 0/16 mm 8 cm Binder 0/16 mm 8 cm 10 cm Mineral Base 0/45 mm 30 cm Hydraulically bound base 0/32 mm 40 cm 30 cm

  8. (Hamburg) Wheel Tracking Year of construction Track @ Delta 50° C [mm] 60° C [mm] 50° to 60° C [mm] Container Terminal B 2000 3,2 18,3* + 15,5** Container Terminal B 2000 3,0 12,6 + 9,6 Container Terminal C 1998 2,2 3,7 + 1,5 Container Terminal C 1998 4,0 6,4 + 2,4 * Failure after 16600 asses, stripping ** Detla at failure point 16600

  9. SmB (Sasobit) PmB Asphaltbinder 0/16 gem. ZTV/St-Hmb. Spurbildungsergebnisse gem. TPA - StB mit PmB 45 3,3 mm mit SmB 35 (97 M.-% 50/70 + 3 M.-% Sasobit) 2,3 mm mit PmB 25 2,5 mm PmB 25 RC + 3 % Sasobit 1,1 mm

  10. Proven Asphalt on Container Terminals in Hamburg Wheel tracking @ 50°C Wheel tracking @ 60°C Bezeichnung Bitumen RAP SmB 35 SD2 50 % 3,04 mm Asphalttragschicht B 0/22 SmB 35 SD2 50 % 2,12 mm Asphalttragschicht CS 0/22 Caribit 25 RCSD4 30 % 2,12 mm Asphalttragschicht CS 0/22 SmB 25 SD4 2,21 mm Asphalttragschicht B 0/22 50 % Nypol 25 HR 1,72 mm 3,28 mm Asphalttragschicht CS 0/22 50 % Asphaltbinder 0/16 Caribit 25 RCSD2 30 % 1,90 mm Asphaltbinder 0/16 S Caribit 25 RCSD3 20 % 2,65 mm Asphaltbinder 0/16 S Nypol 25 HR 20 % Caribit 25 RCSD4 20 % Asphaltbeton 0/8 hs 1,94 mm 20 % Asphaltbeton 0/8 hs Nypol 25 HR 1,44 mm Caribit 25 RCSD4 Asphaltbeton 0/11 hs 20 % Asphaltbeton 0/11 hs Nypol 25 HR 20 % Caribit 25 RCSD4 SMA 0/8 20 % 1,12 mm SMA 0/8 Nypol 25 HR 20 % 1,55 mm SMA 0/16 Caribit 25 RCSD3 20 % SMA 0/16 Nypol 25 HR 20 % 3,31 mm SMA 0/16 Caribit 25 RCSD 1,12 mm SMA 0/16 Nypol 25 HR 1,52 mm

  11. The Future….. • Has anybody got money to pay for cost increase? • Crumb Rubber appears to be a solution • New pre activated dry compound for mixer addition • Dosing like filler

  12. The Future…..

  13. HOCHSTANDFESTE FLÄCHEN MIT ASPHALT -LICHEN DANK FÜR IHRE AUFMERKSAMKEIT

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